Rotary valve for gasoline engines



Dec. 21 1926. 1,611,788

J. F. sNov R v ROTARY VALVE FOR GASOLINE ENGINES Filed April 2 1924 2 Sheets-Sheet 1 lllflrwmr INVENTOR ATTORNEY.

Dec. 21 192s. 1,611,788

J. F. SNOVER ROTARY VALVE FOR GASOLINE ENGINES Filed A rii 23 1924 2 .Sheets-Shet a INVENTOR,

ATTORNEY.

Patented Ben. 21, 1926.

JOHN FRANKLIN SNOVER, F JOHNSON CITY, NEVJ YORK, ASSIGNOR 0F ONE-HALF 'l'O JOHN C. GREG-Gr, OF JOHNSGN CITY, NEW YORK.

ROTARY VALVE FOR GASOLINE ENGINES.

Application filed April 23, 1924. Serial No. 708,517.

This invention relates to improvements in internal combustion engines the general object of the invention being to provide a rotary valve for controlling the inlet and exhaust of the engine so as to eliminate the reciprocating valves now in use.

Another object of the invention is to so form the parts that the movable part of the valve can be easily and quickly removed 1.0 for cleaning purposes or for repairing purposes.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, il-

lustrated in the accompanying drawings and specifically pointed out in the appended claim.

In describing my invention in detail, ref

ercncewill be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a side view of a motor constructed in accordance with my invention.

Figure 2 is a longitudinal sectional view through the valve means.

Figure 3 is a section on line 83 of Figure 2.

Figure 4 is a section through line 4t4 of Figure 2.

As shown in these views, I form an extension 1 at one side of the cylinder block A. of the engine in which is formed a cylindrical valve chamber 2 which is in CO111l11L1 nication with the cylinders by the ports 3. The ends of this valve chamber are closed by the screw plugs i and its lower part is in communication with the exhaust manifold 49 B by the ports 5 and ports 6 connect the valve chamber with the inlet chamber 7 which is formed in the extension 1 above the valve chamber and which is connected with the carburetor by the pipes 8. This inlet chamber is of considerable length and is curved so that it extends over approximately a quarter of the valve chamber, as shown in Figures 3 and i. A tubular valve 9 is rotatably mounted in the chamber 2 and is 59 held in place by the plugs 4:. A shaft 10 is connected with one end of the valve and extends through one of the plugs 4 and has secured to its outer end a sprocket 11 over which a chain 12 passes which also passes over a sprocket 13 and a shaft 14 carried by the motor and which carries a second sprocket 15 over which a chain 16 passes, which is driven from the crank shaft b means of the sprocket 17 on said shaft. The valve 9 is formed with the transversely exco tending passages 18 in its walls, the bottoms of which are formed with a double curve, as shown at 19, for connecting theports 3 with the inlet and exhaust ports of the extension. From the foregoing itwill be seen that during the rotation of the valve 9 from the crank shaft the inlet ports 6 and the outlet ports 5 Will be alternately placed in communication with the ports 3 so as to control the inlet of explosive mixture to the cylinders and the escape of the exhaustgases therefrom.

This invention will do away with the disadvantages that are associated with the use in of reciprocating valves and by having the inlet chamber 7 located in the extension the explosive mixture will be highly heated before being introduced into the cylinders and this mixture will also act as a cooling meu dium for the valve parts. By removing the plugs I the valve can be removed so that the parts can be easily kept clean or repaired or replaced by new ones.

It is thought from the foregoing description that the advantages and novel features of my invention will be readily apparent.

I desire it to be understood that I may make changes in the construction and in the combination and arrangement of the several as parts, provided that such changes fall within the scope of the appended claim.

What I claim is In an internal combustion engine, a carburett'or, a cylindrical valve chamber arranged at one side of the engine and having a port in its lower end for communication with the exhaust manifold of the englue, and a port at one side for communication with the carburettor, a curved partition arranged within the chamber and rising from the inner end of the last mentioned port in concentric relation with the bore of the chamber said partition defining a fuel inlet chamber by the space therebetween and the wall of the engine casing, the inner end of said partition terminating in spaced relation to the adjacent confronting wall of the engine to define a port establishing communication between the said fuel inlet chamber and valve chamber, and a rotary valve operating in the valve chamber and having 0ppositely curved surfaces for controlling communication between said ports, and be- 1 tween the fuel inletchamber and cylinder. In testimony whereof I ailix my signature.

JOHN FRANKLIN SNOW EE. 

